Astronomy

The top of Mauna Kea with Keck Observatory in the foreground

Court Revokes the Construction Permit for Contentious Hawaiian Telescope

Protestors physically blocked access to the Mauna Kea construction site for more than a year and now the project faces another roadblock

The Pleiades Star Cluster

Look to the Skies This Month for the Pleiades Star Cluster

The Seven Sisters will shine bright from dusk till dawn for the rest of November

A new exoplanet was discovered by telescopes at the Cerro Tololo Inter-American Observatory

A New Earth-Sized Planet Is Getting Astronomers Riled Up

It could be a rare opportunity for scientists to study an exoplanet’s atmosphere

Orion's Return, Falling Fireballs and Other Treats in November's Night Skies

A constellation rises as the Leonid and Taurid Meteor Showers return

Planets forming around a young star (artist’s vision)

92 Percent of Possible Earth Twins Have Yet to Be Born

Our young universe promises trillions of more planets to come

The Orionid Meteor Shower and Rare Planetary “Dance” Make This a Lucky Week for Stargazers

Here’s what the night sky has to offer this week

People around the world gathered to photograph and ogle the bright red glow of last night’s supermoon lunar eclipse.

The Photos of the Rare Supermoon/Lunar Eclipse Convergence Do Not Disappoint

Take in the majesty of the unusual astrophysical event with these photos captured around the world

The Theory of Relativity, Then and Now

Albert Einstein's breakthrough from a century ago was out of this world. Now it seems surprisingly down-to-earth

Black Holes Might Catapult Rogue Supernovas Into Space

Like being fired from a slingshot at 4.5 million miles an hour

A solar flare erupts from the Sun in 2012.

When Will the Next Solar Superflare Hit Earth?

The year 2209 just got a lot scarier

Watch the Perseids Peak This Week

Summer's stunning meteor shower is sure to please stargazers

An artist’s vision of what the night sky would look like from a planet at the heart of an ultracompact galaxy

These Super-Dense Galaxies Are Bursting With Stars

Life in these systems would have trouble starting, but the night skies would be spectacular to behold

Philae snapped this image of 67P over a mile from the comet's surface.

Philae Proves There's More to Comets Than Dust and Ice

The lander found organic compounds on comet 67P

Pluto may be home to a hazy atmosphere, nitrogen glaciers and possibly even an underground ocean.

There's Flowing Ice on Pluto

And maybe an underground ocean

The Milky Way and moon illuminate a lone tree in the Atacama Desert, Chile.

An Astronomer's Paradise, Chile May Be the Best Place on Earth to Enjoy a Starry Sky

Chile's northern coast offers an ideal star-gazing environment with its lack of precipitation, clear skies and low-to-zero light pollution

An Internet Billionaire Just Pledged $100 Million to Search for Extraterrestrial Life

More telescope time, better equipment could help scientists figure out what’s out there

New Horizons snapped this image of Pluto on July 12, 2015.

How Pluto Got Its Name

New Horizons carries an instrument named for Venetia Burney, the 11-year-old girl who named Pluto

Here’s What the Sun Looks Like Through an X-Ray Telescope

All of the wonder of Earth’s closest star, none of the retinal damage

The Cassini spacecraft took this image of three of Saturn's moons, Rhea, Mimas and Titan.

See Three of Saturn’s Moons Pose in a Family Photo

While in orbit, Cassini captures a stunning shot of three crescents

An image of the galaxy NGC 1097, home to the black hole researchers just weighed

How Do Scientists Weigh a Supermassive Black Hole?

A new method puts the mass of one black hole at 140 million times the mass of our Sun

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